minjo mm

The scientific notation 3.5 ×103 multiplied by 3 is
A. 1.05 ×102 B.1.05×1010 C. 1.05×103 D.1.05×109 E. 1.05×104

1. The scientific notation 8.2×10-4 + 5.4×10-4=………
   A.1.35×10-5 B. 1.36×10-4 C.1.36×10-3 D.1.36×10-7 E.1.36×103

2. Which of the following is (are) true?
   A.log⁡〖(xy) 〗=log⁡x + log⁡y B. (log⁡x )^n = n log⁡x C. log_10⁡1=0
   D.log_x⁡x=1 E.log⁡(x/y)= log⁡x-log⁡y
   A.2 B.3 C.5 D.8 E.9

3. If 312x+1 . 3x+4= 99, then x=……….
   A.4 B.5 C.6 D.7 E.1
   4.√288 + √200 + √392 =……..
   A.20√2 B.16√2 C.10√2 D.8√2 E.4√2

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4. Simplify (a×a×a……a)/(a+a+a+⋯a)
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